kworker/u4:15: attempt to access beyond end of device
loop4: rw=1, sector=53416, nr_sectors = 8 limit=40427
kworker/u4:15: attempt to access beyond end of device
loop4: rw=2049, sector=45096, nr_sectors = 8 limit=40427
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 8409 Comm: kworker/u4:15 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Workqueue: loop6 loop_workfn
Call trace:
 dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1864/0x6800 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x63c kernel/locking/lockdep.c:5662
 do_write_seqcount_begin_nested include/linux/seqlock.h:515 [inline]
 do_write_seqcount_begin include/linux/seqlock.h:541 [inline]
 psi_group_change+0x240/0x1344 kernel/sched/psi.c:801
 psi_task_change+0xec/0x244 kernel/sched/psi.c:924
 psi_enqueue kernel/sched/stats.h:143 [inline]
 enqueue_task kernel/sched/core.c:2056 [inline]
 activate_task+0x220/0x240 kernel/sched/core.c:2088
 ttwu_do_activate+0x150/0x214 kernel/sched/core.c:3700
 ttwu_queue kernel/sched/core.c:3905 [inline]
 try_to_wake_up+0x424/0xc68 kernel/sched/core.c:4228
 wake_up_process+0x18/0x24 kernel/sched/core.c:4362
 wakeup_softirqd kernel/softirq.c:80 [inline]
 raise_softirq_irqoff kernel/softirq.c:726 [inline]
 raise_softirq+0x90/0x110 kernel/softirq.c:734
 blk_mq_raise_softirq block/blk-mq.c:1197 [inline]
 blk_mq_complete_request_remote+0x43c/0x610 block/blk-mq.c:1220
 blk_mq_complete_request+0x24/0xa8 block/blk-mq.c:1236
 loop_handle_cmd drivers/block/loop.c:1924 [inline]
 loop_process_work+0x9d8/0x2040 drivers/block/loop.c:1942
 loop_workfn+0x50/0x64 drivers/block/loop.c:1966
 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292
 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850